Penjelasan dengan langkah-langkah:
SUDUT dalam △KLM
△KLM siku-siku di K
∠L + ∠M = 90°
(2x + 17)° + (x + 4)° = 90°
3x + 21° = 90°
•••dibagi 3•••
x = 30 – 7
x = 23
besar ∠M = x + 4
besar ∠M = 23 + 4
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Penjelasan dengan langkah-langkah:
SUDUT dalam △KLM
△KLM siku-siku di K
∠L + ∠M = 90°
(2x + 17)° + (x + 4)° = 90°
3x + 21° = 90°
•••dibagi 3•••
x = 30 – 7
x = 23
besar ∠M = x + 4
besar ∠M = 23 + 4
besar ∠M = 27° ✔